WO1989010814A1 - Procede de coupe de la surface de rouleaux - Google Patents

Procede de coupe de la surface de rouleaux Download PDF

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Publication number
WO1989010814A1
WO1989010814A1 PCT/JP1988/000463 JP8800463W WO8910814A1 WO 1989010814 A1 WO1989010814 A1 WO 1989010814A1 JP 8800463 W JP8800463 W JP 8800463W WO 8910814 A1 WO8910814 A1 WO 8910814A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
cutting
axis
cutter
force
Prior art date
Application number
PCT/JP1988/000463
Other languages
English (en)
Japanese (ja)
Inventor
Hidenobu Morikuni
Mamoru Nishioka
Hiroshi Matsumoto
Kenji Fujihara
Original Assignee
Kashiwara Machine Mfg. Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kashiwara Machine Mfg. Co., Ltd. filed Critical Kashiwara Machine Mfg. Co., Ltd.
Priority to PCT/JP1988/000463 priority Critical patent/WO1989010814A1/fr
Priority to DE883891295T priority patent/DE3891295T1/de
Priority to US07/455,337 priority patent/US5134910A/en
Publication of WO1989010814A1 publication Critical patent/WO1989010814A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B5/08—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning axles, bars, rods, tubes, rolls, i.e. shaft-turning lathes, roll lathes; Centreless turning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/02—Milling surfaces of revolution
    • B23C3/04—Milling surfaces of revolution while revolving the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/306664—Milling including means to infeed rotary cutter toward work
    • Y10T409/30756—Machining arcuate surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/10—Process of turning
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2524—Multiple

Definitions

  • This invention relates to a method of cutting the surface (body surface) of a roll, and is a roll of a 3-roll type rolling mill (straight roller) used for manufacturing seamless pipes. It relates to a suitable method for cutting.
  • One mouthpiece is shown in Fig. 5 (i), and the three rolls 1 0... are aligned on one plane with their axes i... and arranged in an isometric direction by 1 2 0'.
  • a force river hole 11 of a predetermined shape is formed in the center.
  • the caliper hole 1 1 of the mouthpiece is set to become smaller in order from the upstream side to the downstream side, so that the pipe is gradually squeezed.
  • the roll surface is basically the central force river surface 1 0 that forms the force river hole 1 1. It is composed of c and the chamfered surfaces on both the left and right sides (hereinafter, 1 2 0'planes) 10 a and 10 b. 3 Ronore 1 0... force
  • the river hole 1 1 tends to be rice ball-shaped on the upstream side, and approaches a perfect circle as it goes downstream. It will eventually become a perfect circle, and if you look at one roll, it will be a force.
  • the shape of the river is an elliptical shape with a large flatness (girder circle ⁇ : ⁇ 3 ⁇ 4 ⁇ ⁇ minor axis) on the h flow side, and this gradually changes to a smaller ellipticity toward the downstream side. Finally, the ellipticity is 0, that is, a perfect circle is reached.
  • the method shown in Fig. 6 is known as a method for cutting multiple rolls (hereinafter referred to as set rolls) at the same time in the assembled state. That is, this is the center of the roll stand 1 (center O of the potash hole 1 1) incorporating three rolls 10..., and the three bits 3 on the axis of rotation (cutting edge 30).
  • the offset amount indicated by the symbol e in the figure (the surface including the three roll axes i (hereinafter, roll axis arrangement)).
  • the obtained force The shape of the river surface changes depending on the selection of the (called surface) P and the bite cutting edge position A).
  • this method is a di instead of three bits 3 1 ... It is also possible to change the cutting feed to advance / retreat of the cutter axis 30 by using a scubat.
  • this method only cuts out one surface of the force river, and the formation of the shoulder part 10 b and the surface 10 a part has not been originally considered, and its processing is impossible.
  • the machining of these parts is separate from the machining of the force river surface, that is, after cutting the cover surface 10 c into a predetermined shape, the chain line in Fig. 6 and the dedicated bit 4 as shown in Fig. 7. It is necessary to set and manually operate this to perform additional machining. For such additional machining, two locations are cut for each roll, for a total of six locations. Not only is it very cumbersome and time-consuming, but it is also extremely difficult to smoothly connect the shoulder R part 10 b to the previously finished force river surface 10 c without steps. Yes, it requires a considerable amount of work.
  • the present invention it is possible to machine a roll surface of any shape with high precision without performing additional machining, and it can be applied to the cutting of the above-mentioned pipe rolling mill roll to form a perfect circle or elliptical caliber. It is an object of the present invention to provide a simultaneous cutting method of an assembly that can continuously form a shoulder R portion and a 120'surface together with a surface.
  • the center of the cutter shaft 20 matches the center axis O of the force river hole 1 1 and the cutting edge 2 1 a of each bit is a force.
  • One hole of the river Positioned so as to face each mouth 10 in a state parallel to the central axis O, and with the roll 10 ... rotated, Fig. 2 (i), (mouth) ((i)) As shown in the front view and (the mouth) is a plan view), the above bit 2 1 ... Then, cut the mouthpiece surface into the desired shape o
  • the cutting bit 2 1 ... Is cut and fed in the roll-sensitive i direction by axis drive, and at this time, the positions of the three axes, the Z axis and the R axis, are numerically controlled for cutting. According to this, the cutting edge 2 la'of the bait can be made to draw an arbitrary trajectory, and any shape can be given to the mouth surface.
  • the bite edge 2 1 a' is not provided so as to face outward in the radial direction of one axis of the cutter as in the conventional case (see Fig. 6). Hold it so that it is parallel to the axis 2 0, and face the bite cutting edge 2 1 a'from the front side of the roll 10 ... In this way, the byte cutting edge 2 1 a'is always kept at a right angle to the roll axis i regardless of the axial position change, which results in a force river. Not only the surface 10 c, but also the R of the shoulders 10 b on both sides and the surface 10 c of 1 2 0'can be continuously formed at the same time.
  • the method of the present invention it is not necessary to separately process the force river surface 10 c and the shoulder R portion 10 b, etc. as in the conventional case, and the time required for rolling surface processing is increased.
  • the man-hours can be greatly reduced, and there is no concern that a step will be created at the connection position between the force river surface 10 c and the shoulder R part 10 b as in the past. In short, it is possible to always obtain a roll surface with a stable shape.
  • a caliber surface having a composite ellipse structure consisting of a plurality of ellipses having different ellipticity is required, but the method of the present invention meets the requirements for such a special surface shape. Can be handled without difficulty.
  • the mouth surface cutting method of the present invention is a method of cutting a plurality of rolls incorporated in the roll stand at the same time, and has the flexibility to form the roll surface into any shape.
  • NS special surface shape
  • the additional machining of the shoulder R part, etc., which was conventionally required in cutting the roll of the pipe rolling mill is no longer necessary, and the problem of the occurrence of step on the roll surface, the machining man-hours, and the disadvantage in terms of time can be solved.
  • the effect is extremely large.
  • FIG. 1 is a diagram for explaining the method of the present invention
  • (i) is a front view
  • (mouth) is a side view
  • FIG. 2 is a diagram showing the operation status of the bite in the method of the present invention
  • (i) is a front view
  • Fig., (Mouth) plan view
  • Fig. 3 shows an example of a processing device for carrying out the method of the present invention
  • (a) is a side view
  • (Mouth) is a plan view
  • Fig. 4 is the same device.
  • Fig. 5 (i) is a front schematic view showing one roll stand in a three-roll type pipe rolling mill. Partial enlarged view showing the shape of the surface.
  • Fig. 6 is an explanatory view showing the conventional assembly roll processing method.
  • (I) is a front view
  • (mouth) is a side view
  • Fig. 7 is a conventional roll surface shoulder.
  • Explanatory view (plan view) which shows the method of R processing of.
  • Fig. 3 shows an example of a device (lathe) for carrying out the method of the present invention
  • (a) is a side view
  • (mouth) is a plan view
  • Fig. 4 is a conceptual diagram of the structure of the device. It is an explanatory diagram.
  • 5 is a set roll as a work piece, that is, a material mount for setting the roll stand 1, and roll stand 1 has a roll arrangement surface P at right angles to the cutter ⁇ 20 of the tool post 7, which will be described later. It is set to be.
  • a rolling unit 6 of the roll stand 1 is provided, and when the lever 6 1 is rotated by the air cylinder 60, the cutting 6 2 is applied. It is connected to the rotation shaft of the mouthpiece 1 (not shown) so that the rotation of the power source 6 3 is transmitted to the 3 lever 10....
  • Reference numeral 7 denotes a blade combination provided opposite to the above material mounting combination 5, which is installed on the upper surface of the bed 8 and is provided so as to be able to advance and retreat in the axial direction Z of the material mounting 5, that is, the cutter 3 ⁇ 4 ⁇ 20 described later.
  • This tool post 7 is equipped with a force cutter 2 on the front side of the tool post 7.
  • the force cutter consists of a cutter shaft 20 that can rotate in the circumferential direction and a cutter head 2 2 provided at the tip of the shaft, and the cutter head 2 2 is the front of the head body.
  • the tool post 7 is made by screwing a nut 7 1 projecting on the lower surface of the tool post into a ball screw 70 provided on the Z rod in the bed 8, and using the ball screw 70 as the servomotor M 2 By rotating with, it slides in the Z-axis direction together with the nut 71.
  • the force ter shaft 20 is rotated in the 5-axis direction via the worm 2 3 and worm gear 2 4 by the servo motor M ⁇ (see Fig. 3) provided on the side of the tool post 7. It is becoming possible to be.
  • the above cutter axis 20 is passed in the axial direction.
  • the spin dollar 2 5 is slid in the direction of the ball screw 2 6 ⁇ nut 2 7 by the server motor MR (see Fig. 1) provided on the rear surface of the tool post 7, it is attached to the tip.
  • Each bit 2 1 that engages with the inclined surface 2 8'of the cone 2 8 goes in and out in the R-axis direction.
  • a processing device such as a memorandum is equipped with a numerical control (NC) device, and the Z-axis, axis, and R-axis are installed according to the program input by this NC device as a digital signal. It is designed to control the 3-axis motion of.
  • NC numerical control
  • the work is performed as follows.
  • the set roll (mouth stand 1) to be processed into the material mount 5 is formed by 3 rolls 1 0....
  • the center 0 of the river hole 1 1 is the force of the tool post 7. 1 Align with the center and fix.
  • the three mouths of the roll stand 1 set in this way 1 0 ... are connected to the drive unit 6 and rotated at high speed, and in this state, as shown in Fig. 1 (i).
  • one bite 2 1 ... of the blade combination 5 corresponds to each mouthpiece 10 and feeds the bite from one end side to the other end side of the roll 10 to cut.
  • the feed of the bite 2 1 (trajectory of the cutting edge 2 1 a) is linear as indicated by the symbol M in Fig. 2 (i) (actually, the operation locus of the bite 2 1 is shown in Fig. 2 (mouth)).
  • This feed is performed by combining axial motion and R-axis motion. That is, the bit 2 1 is moved in a circle by axial movement (rotation). At this time, the position of the cutting edge is corrected by the R-axis motion to draw a commercial line locus. Therefore, in the entire process of such feeding, the cutting edge 2 1 a'is always in contact with the roll surface from the direction perpendicular to the roll shaft arrangement surface P, and it is possible to cut under the same conditions for the entire roll length. 0
  • the position to apply the bite is the position directly in front of the roll 10 (the position where the cutting edge 2 1 a'is facing the center of the roll) X.
  • the bite may be applied to the point X'positionally displaced from the front position X in the circumferential direction.
  • any shape can be obtained by adjusting the position of bit 2 1 in the Z-axis direction, that is, the cutting direction (cutting amount) as shown in Fig. 2 (mouth). It can be carved out. That is, as shown in Fig. 5 (mouth) 1 2 0 • Surface 1 0 a --Shoulder R part 1 0 b — Coverer surface 1 0 c — Waste R part 1 0 b --1 2 0 * Surface 1 0 Since it is possible to machine out a roll surface having the structure of a, or a force line, a surface with a composite elliptical shape, etc.
  • machining is carried out by moving bit 2 1 in the three-axis directions of Z-axis, 0-axis, and R-spindle.
  • the NC is performed in advance.
  • a program corresponding to the target roll surface shape is manually prepared for the device, and the Z axis, ⁇ is used by the NC device.
  • bit 2 1 By performing numerical control on the three axes of the R axis, bit 2 1... can be obtained. It automatically operates along the required trajectory and cuts. This makes it possible to cut the roll surface into a desired shape with high accuracy. Industrial applicability.
  • the method of the present invention can also cut out a flat roll on one surface of the ribber, which is not found in the conventional roll surface processing method. It is an advantage.
  • Motoshige outside (UBUKATA, Motoshige et al.)
  • This invention relates to a method of simultaneously cutting a
  • the cutter (2) holds the tools (21) so
  • the cutter (2) is moved in the axiai direction Z and extending direction ⁇ , and the tools (21) in the radial
  • Cutter 2 holds the cutting edge 2 1 a'of bit 2 1 so that it is parallel to the cutter axis 20 and faces the roll 10.... Cutting is performed by facing the pipe cutting edge 2 1 a, from the side. In cutting, the cutter 2 moves in the sensitive direction Z and the circumferential direction, and the byte 2 1 moves in the radial direction R.
  • the present invention relates to a method of cutting the surface (body surface) of a roll, and cuts a roll of a 3-roll type rolling mill (stretch reducer) used for manufacturing seamless steel pipes. Regarding the method suitable for.
  • multiple roll stands (20 stands or more) with a force river hole formed in the center by incorporating three nozzles are arranged in the tandem. ing.
  • One roll stand is shown in Fig. 5 (i), and the three rolls 1 0... are aligned on one plane with their axes i... and are arranged in the same angle by changing the direction of 1 2 0' ⁇ .
  • a force river hole 11 of a predetermined shape is formed in the center.
  • the caliveper holes 1 1 of the mouth stand are set to become smaller in order from the upstream side to the downstream side, so that the pipe is gradually squeezed and rolled. ..
  • the roll surface is basically the central force river surface 10 c that forms the force river hole 1 1 and its left and right sides.
  • the chamfered surface (hereinafter 120 ⁇ surface) is composed of 10 a and 10 b. 3
  • the force of the roll 1 0...
  • the hole of the river 1 1 tends to be rice ball-shaped on the upstream side, and approaches a perfect circle as it goes to the downstream side.
  • the final result is a perfect circle, and if you look at one ⁇ -le, the force
  • the shape of the river is an elliptical shape with a large flatness (girder circle ⁇ : / 3 ⁇ 4 diameter Z minor diameter) in the Hiryu, and this gradually changes to a smaller ellipticity toward the downstream side. Finally, the ellipticity is 0, that is, the true R shape is reached.
  • the mouthpiece of each stand is usually made by adding R to the left and right shoulders 10 b and 10 b on one side of the force lipper 10 b, and depending on the caliber'edge at the time of rolling. Prevents the rolling of scratches.
  • the method shown in Fig. 6 is known as a method for cutting multiple rolls (hereinafter referred to as set rolls) at the same time in the assembled state. That is, this is 3 on the rotation axis (cutter 1 axis 30) at the center of the roll stand 1 (center O of the force river 1 hole 1 1) in which 3 rolls 10 ⁇ are incorporated.
  • Set the cutter 3 provided with the bit 3 1 ⁇ outward (semi-circular outward), and apply the force 3 1 to the rotating roll 1 0...
  • the rotation of the roll makes a circular motion along the direction of the roll axis i (cutting feed), and the cover surface 10 c is carved out.
  • the shape of the obtained coverr surface changes depending on the selection of the surface to be included (hereinafter referred to as the roll axis arrangement surface) P and the bite cutting edge position A barb.
  • the roll axis arrangement surface P and the bite cutting edge position A barb.
  • the offset amount e the larger the ellipticity, and the smaller it, the smaller the ellipticity, and a perfect circle is formed with 0 offset. Note that this method replaces the three bytes 3 1... It is also possible to use a scuba to change the cutting feed to advance / retreat of the cutter axis 30.
  • this method only cuts out the cover surface, and the formation of the shoulder 10 b and 120 ⁇ surface 10 a is not originally considered, and its processing is impossible.
  • the machining of these parts is performed after cutting the caliber surface 10 c into a predetermined shape, and then using the chain line in Fig. 6 and the dedicated buy as shown in Fig. 7. It is necessary to set the 4 and manually operate it to perform additional machining. Such additional machining cuts 2 places per roll, 6 places in total. Not only is it very troublesome and time-consuming, but the shoulder R part 10 b is smoothly connected to the previously finished force river surface 10 c without any steps. It is extremely difficult and requires a considerable amount of work.
  • the present invention it is possible to machine a mouthpiece surface of any shape with high precision without performing additional machining, and it can be applied to the cutting of the above-mentioned pipe rolling mill roll to form a perfect circle or an elliptical shape. It is an object of the present invention to provide a simultaneous cutting method for rolling mills capable of continuously forming the shoulder R portion and the 120 * surface together with the river surface.
  • the cutting bit 2 1 in the method of the present invention, the cutting bit 2 1 ... According to this, the cutting edge 2 1 a'of the bite can be made to draw an arbitrary trajectory, and any shape can be given to the mouthpiece surface.
  • the cutting edge 2 1 a'of the bite is not provided so as to face outward in the radial direction of one axis of the cutter as in the conventional case (see Fig. 6). Hold it so that it is parallel to 2 0, and face the bite cutting edge 2 1 a'from the front side of the roll 1 0....
  • the note cutting edge 2 1 a' is always kept at a right angle to the roll axis i regardless of the axial position change, which results in one side of the force solution 1 Not only 0 c, but also R of shoulders 10 b on both sides and 1 2 0'face 10 c can be continuously molded at the same time.
  • the method of the present invention it is not necessary to separately process the force river surface 10 c and the shoulder R portion 10 b, etc. as in the conventional case, and the time and man-hours required for the roll surface processing are large. There is no concern that there will be a step in the connection position between the cover surface 10 c and the shoulder R part 10 b as in the past, and no special technique is required. It is possible to obtain a roll surface having a fixed shape.
  • a cover surface having a composite elliptical structure composed of a plurality of ellipses having different ellipticity may be required, but the method of the present invention is difficult to require such a special surface shape. It can be dealt with without any problems.
  • the roll surface cutting method of the present invention is a method of simultaneously cutting a plurality of mouthpieces incorporated in the roll stand, and has the flexibility to form the roll surface into any shape.
  • FIG. 1 is a view for explaining the method of the present invention, in which (a) is a front view and (mouth) is a side view.
  • FIG. 2 is a diagram showing the operation status of the vehicle according to the method of the present invention, in which (a) is a front view and (mouth) is a plan view.
  • FIG. 3 shows an example of a processing apparatus for carrying out the method of the present invention, (a) is a side view, and (mouth) is a plan view.
  • Figure 4 is an explanatory diagram of the mechanism of the same device.
  • Fig. 5 (i) is a schematic front view showing one mouth-to-mouth stand in a three-port-type pipe rolling mill, and the same mouth-to-port roll that is also incorporated into the same mouth-to-rustand.
  • FIG. 6 is an explanatory view showing the conventional rolling process method.
  • (I) is a front view and (mouth) is a side view.
  • Fig. 7 is an explanatory view (plan view) showing the conventional method of R processing of the roll surface shoulder.
  • FIG. 3 shows an example of a device (lathe) for carrying out the method of the present invention
  • (a) is a side view
  • (mouth) is a plan view
  • Fig. 4 conceptually illustrates the structure of the device. It is an explanatory diagram.
  • 5 is the assembly roll as the work piece, that is, the material mounting base for setting the roll stand 1, and the roll stand 1 is for the force lid uniaxial 20 of the tool post 7, which will be described later.
  • the mouthpiece placement surface P is set so that it is at a right angle.
  • a drive unit 6 for the roll stand 1 is provided, and when the lever 6 1 is rotated by the air cylinder 60, the coupling 6 2 is rolled. It is connected to the rotation shaft of the window 1 (not shown) so that the rotation of the power source 6 3 is transmitted to the 3 rolls 10....
  • Reference numeral 7 denotes a blade set facing the material mounting base 5, which is installed on the upper surface of the bed 8 and is provided so as to be able to advance and retreat in the material mounting base 5, that is, the axial direction Z of the cutter shaft 20 described later. ing.
  • This tool post 7 is equipped with a force cutter 2 on the front side of the tool post 7.
  • the cutter consists of a cutter shaft 2 0 that can rotate in the circumferential direction and a cutter provided at the tip of the shaft 20'; / Do 2 2, and the cutter head 2 2 is the front of the head body.
  • the same number of rolls 1 0... as the object to be cut that is, three bytes 2 1 ⁇ ' ⁇ , which are slidably incorporated in the radial direction R of the cutter axis, are built in in the circumferential direction. Ten are placed in equal positions, that is, every 1 2 0', and one corresponds to each roll 10.
  • This bit 2 1 is mounted so that its cutting edge 2 1 a is parallel to the cutter shaft 20 and is provided with its tip facing forward (material mounting base 5 side).
  • the skeleton mechanism that controls the Z-axis motion of the tool post 7, the axis motion of the cutter ⁇ 20 and the R-axis motion of the bit 21 is shown in Fig. 4. That is, first, in the tool post 7, the ball screw 70 provided on the Z axis in the bed 8 is screwed with the nut 7 1 protruding from the lower surface of the tool post, and the ball screw 7 is screwed into the servomotor M z. By rotating with, it slides in the Z-axis direction together with the nut 71.
  • the force shaft 20 is rotated in the axial direction by the servomotor M ⁇ (see Fig. 3) provided on the side of the tool post 7 via the worm 2 3 and the worm gear 2 4. It has become like this.
  • bit 2 1 For bit 2 1..., it penetrates the cutter shaft 2 0 in the axial direction.
  • spin dollar 2 5 When the spin dollar 2 5 is slid in the li direction via the ball screw 2 6'nut 2 7 by the servo motor MR (see Fig. 1) provided on the rear surface of the tool post 7, it is attached to the tip.
  • MR servo motor
  • Each bit 2 1 that engages with the inclined surface 2 8'of the spine 2 8 goes in and out in the R-way direction.
  • a processing device such as a memorandum is equipped with a numerical control (NC) device, and the Z-axis, axis, and R-axis according to the program input by this NC device as a digital signal. It is designed to control 3-axis motion.
  • NC numerical control
  • the set roll (roll stand 1) to be machined into the material mounting combination 5 is subjected to the force generated by 3 rolls 1 0.... Match and fix.
  • Fig. 1 (i) As shown in, make one bite 2 1 ... of the tool post 5 correspond to each port 10 and send the bite from one end side to the other end side of the roll 10 to cut.
  • the feed of bit 2 1 (trajectory of cutting edge 2 1 a r ) is linear as shown by the symbol M in Fig. 2 (i) (actually, the locus of operation of bit 2 1 is shown in Fig. 2 (mouth). ),
  • This feed is performed by combining axial motion and R-corrosion motion. That is, the bit 2 1 is circularly moved by axial movement (rotation). At this time, the position of the cutting edge is corrected by the R $ 3 ⁇ 4 motion to draw a straight locus.
  • Each bit 2 1 is provided with the cutting edge 2 1 a'directed in the direction parallel to the Z axis as described above. Therefore, in the entire process of such feeding, the cutting edge 2 1 a'always comes into contact with the roll surface from the direction perpendicular to the roll shaft arrangement surface P, and cutting under the same conditions can be performed for the entire roll length.
  • the position to apply the bite is the position directly in front of the roll 10 (the position where the cutting edge 2 1 a'faces the center of the roll) X. This is not limited to this. , As long as the rake angle required for cutting can be secured, the bite may be applied to the point X'positionally displaced from the front position X in the circumferential direction.
  • any shape can be obtained by adjusting the position of bit 2 1 in the Z-axis direction, that is, the cutting direction (cutting amount) as shown in Fig. 2 (mouth). It can be carved out. That is, as shown in Fig. 5 (mouth) 1 2 0 • Surface 1 0 a — Shoulder R part 1 0 b — Coverer surface 1 0 c — Shoulder R part 1 0 b— 1 2 0 * Surface 1 0 It is possible to machine a roll surface having the structure of a, or a cover surface having a composite elliptical shape.
  • machining is carried out by moving bit 2 1 in the three axis directions of Z-axis, ⁇ II, and R-axis.
  • the NC is performed in advance.
  • note 2 1... By inputting a program according to the target ⁇ surface shape to the device and numerically controlling the three axes of Z ⁇ , axis, and R axis with the NC device, note 2 1... can be obtained. It automatically operates along the required trajectory and cuts. This makes it possible to cut the roll surface into the desired shape with high accuracy.
  • Industrial applicability-The above is the case of cutting the set mouth of a pipe rolling mill, that is, cutting of three mouths.
  • the method of the present invention is not limited to this, and can be applied in the same manner in the case of two-mouth or four-mouth.
  • the method of the present invention can also cut out a roll having a flat caliper surface, which is not found in the conventional mouth wheel surface processing method. It is an advantage.
  • T582 1-19 Kaori, Kashiwara-shi, 3 ⁇ 4 Prefecture Osaka, CJP)
  • This invention relates to a method of simultaneously cutting a
  • the cutter (2) holds the tools (21) so
  • the cutter (2) is moved in the axial direction Z and extending direction S t and the tools (21) in the radial
  • This is a method of cutting at the same time with a squeezing cutter 2.
  • the cutter 2 is made in the axial direction Z and the circumferential direction ⁇ , and the bit 2 1 moves in the radial direction of the force cutter.
  • the blade edge 2 1 a' is always kept perpendicular to the mouth axis, regardless of the position change in the axial direction, and not only the Gulliver surface 10 c', but also the shoulders on both sides 1 It is possible to continuously form R of 0 b and surface 10 c at the same time.
  • This invention relates to a method of simultaneously cutting a
  • the cutter (2) holds the tools (21) so
  • This is a method of cutting at the same time with the provided cutter 2.
  • Gutter 2 Holds the tip 2 1 a'of the bite 2 1 so that it is parallel to the cutter axis 2 0, and the bite edge from the front side of the'roll 1 0 ... 2 1 a'is faced and cutting is performed.
  • the force ⁇ 1 is created in the 3 ⁇ 4 direction Z and the circumferential direction, and the bit 2 1 is moved in the force ladder chapter radius: direction R.
  • the bite cutting edge 2 1 a' is always kept perpendicular to the mouth wheel axis regardless of the position change in the 0 axis direction, not only the Gulliver surface 10 G', but also the shoulders 1 on both sides. It is possible to continuously form R of 0 b and surface 10 c at the same time.
  • the present invention relates to a method of cutting the surface (body surface) of a roll, and cuts a roll of a 3-roll type rolling mill (stretch reducer) used for manufacturing a seamless pipe. It concerns a suitable method for doing so.
  • a plurality of roll stands (20 stands or more) in which three rolls are incorporated and a caliber hole is formed in the center are arranged in a tandem. ..
  • One roll stand is shown in Fig. 5 (i), and the three rolls 1 0... are aligned on one plane with their axes i... and are arranged in the same angle by changing the direction by 1 2 0'.
  • a force river hole 11 of a predetermined shape is formed in the center.
  • the roll surface is basically the central force river surface 10 c that forms the force river hole 1 1 and its left and right sides.
  • the chamfered surface (hereinafter referred to as the 120 ° surface) is composed of 10 a and 10 b. 3 Ronore 1 0... force The force formed by the surface 1 0 c...
  • the river hole 1 1 tends to be rice ball-shaped on the upstream side, and approaches a perfect circle as it goes downstream.
  • the roll of each stand is usually made by adding R to the left and right shoulders 10 b and 10 b on one side of the carino, and the car leasing at the time of rolling. Prevents scratches caused by rolling.
  • the method shown in Fig. 6 is known as a method for cutting multiple rolls (hereinafter referred to as set rolls) at the same time in the assembled state. That is, it is located at the center of the roll stand 1 (center O of the force line hole 1 1) incorporating three rolls 10 ... and at the rotation axis (force footer uniaxial 30). Set the cutter 3 with three bits 3 1... facing outward (outward in the radial direction), and apply the force 3 1 to the force shaft 3 0 for the roll 1 0... during west rotation. The rotation of the force causes a circular motion along the direction of the roll axis i (cutting feed) to carve out 10 c on one side of the force river.
  • the obtained force changes the shape of the river surface depending on the selection of the side surface (hereinafter referred to as the roll axis arrangement surface) P and the bite cutting edge position A).
  • the roll axis arrangement surface P and the bite cutting edge position A.
  • this method only cuts out one surface of the force river, and the formation of the shoulder capital 10 b and 1 2 0'surface 10 a part has not been originally considered, and its processing is impossible.
  • the machining of these parts is separate from the machining of the force river surface, that is, after cutting the cover surface 10 c into a predetermined shape, the chain line in Fig. 6 and the dedicated bit 4 as shown in Fig. 7. It is necessary to set and manually operate this to perform additional machining, but such additional machining cuts two places per roll, for a total of six places one by one. Not only is it very cumbersome and time-consuming, but it is extremely difficult to smoothly connect the shoulder R part 10 b to the previously finished force river surface 10 c without steps.
  • the present invention it is possible to machine a roll surface of any shape with high precision without performing additional machining, and it can be applied to the cutting of the above-mentioned pipe rolling mill roll to form a perfect circle or elliptical caliber. It is an object of the present invention to provide a simultaneous cutting method for set rolls capable of continuously forming the shoulder R portion and the 120'plane together with the surface.
  • the center of the force cutter shaft 20 matches the center axis ⁇ of the force river hole 1 1 and the cutting edge 2 1 a of each bit is a cutting edge.
  • One hole of the river It is positioned so as to face each mouth 10 in a state parallel to the central axis O, and the roll 10 ... is rotated.
  • Fig. 2 (i). (Mouth) (( As shown in (i) is the front view and (mouth) is the plan view), the above bit 2 1 ⁇ ⁇ ⁇ is numerically controlled to the three axes of the axis, Z axis and R axis. Cut and feed the roll surface to the desired shape.
  • the cutting bit 2 1 ... Is cut and fed in the roll axis i direction by the sliding motion, and at this time, the positions of the three axes, the Z axis and the R axis, are numerically controlled for cutting. Therefore, according to this, the cutting edge 2 1 a'of the bite can be made to draw an arbitrary trajectory, and any shape can be given to the mouth surface.
  • the cutting edge 2 1 a'of the bite is not provided so as to face outward in the radial direction of one axis of the cutter as in the conventional case (see Fig. 6). Hold it so that it is parallel to the axis 2 0, and face the bite cutting edge 2 1 a r from the front side of the roll 10.... In this way, the noise cutting edge 2 1 a'is always kept at a right angle to the roll axis i regardless of the axial position change, which results in 1 0 on one side of the carino. Not only c, but also the R of the shoulders 10 b on both sides and the surface 10 c can be continuously molded at the same time.
  • one surface of a force river having a composite ellipse structure composed of a plurality of ellipses having different ellipticity may be required, but the method of the present invention is difficult to require such a special surface shape. It can be dealt with without any problems.
  • the mouthpiece surface cutting method of the present invention is a method of cutting a plurality of rolls incorporated in the mouthpiece at the same time, and the shape of the mouthpiece surface is formed.
  • a roll surface that includes a special surface shape such as the shoulder R part and the force of the composite elliptical shape in the pipe rolling mill roll at one time. can. Therefore, the additional machining of the shoulder R part, etc., which was conventionally required for cutting the roll of the pipe rolling mill, is no longer necessary, and the problem of the occurrence of the step on the roll surface, the processing man-hours, and the disadvantage in terms of time can be solved.
  • the effect of is extremely large.
  • FIG. 1 is a view for explaining the method of the present invention, (a) is a front view, and (mouth) is a side view.
  • FIG. 2 is a diagram showing the operation status of the bite in the method of the present invention, in which (a) is a front view and (mouth) is a plan view.
  • FIG. 3 shows an example of a processing apparatus for carrying out the method of the present invention, (a) is a side view, and (mouth) is a plan view.
  • Figure 4 is an explanatory diagram of the mechanism of the same device.
  • Fig. 5 (i) is a schematic front view showing one of the three roll type tube rolling mills'2 one rustand, and the same (mouth) shows the roll surface shape of the mouth roller incorporated in the same roll stand.
  • Fig. 6 is an explanatory view showing the conventional assembly roll processing method.
  • (I) is a front view and (mouth) is a side view.
  • Fig. 7 is an explanatory view (plan view) showing the conventional method of R processing of the roll surface shoulder.
  • FIG. 3 shows an example of a device (lathe) for carrying out the method of the present invention
  • (a) is a side view (mouth) is a plan view
  • Fig. 4 is a conceptual illustration of the structure of the device. It is a figure.
  • 5 is the set roll as the object to be cut, that is, the material mounting base for setting the roll stand 1, and the mouth-to-mouth stand 1 is the force shaft 20 of the tool post 7, which will be described later.
  • the roll arrangement surface is set so that it is at a right angle.
  • a drive unit 6 for the roll stand 1 is provided, which causes the coupling 6 2 to roll when the Leno 1 6 1 is driven by the air cylinder 60. It is connected to the rotation shaft of rustand 1 (not shown) so that the rotation of the power source 6 3 is transmitted to 3 rolls 10....
  • This tool post 7 is a blade that is provided facing the material mounting 5 above, and is installed on the bed 8 so that it can move forward and backward in the axial direction Z of the material mounting base 5, that is, the cutter ⁇ 20 described later. It is provided.
  • This tool post 7 is equipped with a cutter 2 on the front side of the tool post 7.
  • the cutter consists of a cutter shaft 20 that can rotate in the circumferential direction and a cutter head 2 2 provided at the tip of the shaft, and the cutter head 2 2 is the front of the head body.
  • the same number of rolls 10... as the cutting target, that is, three bits 2 1... are incorporated so as to be slidable in the radial direction R of the force shaft.
  • Bits 2 1... are arranged equally in the circumferential direction, that is, every 120 °, and one bit corresponds to each roll 10. This bit 2 1 is mounted so that its cutting edge 2 1 a is parallel to the cutter shaft 20 and its tip is directed forward (material mounting base 5 side). For bit 2 1, use a non-directional cutting edge 2 1 a'with a circular shape or the like and the cutting direction is not limited.
  • Figure 4 shows the skeleton mechanism that controls the Z-axis motion of the tool post 7, the axis motion of the cutter axis 20 and the R-axis motion of the bit 21.
  • the ball screw 70 provided along the Z axis in the bed 8 is screwed with the nut 7 1 projecting from the lower surface of the tool post, and the ball screw 70 is used as the support motor M. By rotating it with z , it slides in the Z-axis direction together with the nut 71.
  • the force shaft 20 is rotated in the axial direction via the worm 2 3 ⁇ worm gear 2 4 by the support motor M ⁇ (see Fig. 3) provided on the side of the tool post 7. It is becoming possible to be.
  • Note 2 1 penetrates the above cutter axis 20 in the axial direction.
  • the spin dollar 2 5 is slid axially through the ball screw 2 6 ⁇ nut 2 7 by the server motor MR (see Fig. 1) provided on the rear surface of the blade 7, it is attached to the tip.
  • Each bit 2 1 that engages with the inclined surface 2 8'of the corner 2 8 goes in and out in the R-axis direction.
  • the processing equipment such as the earthen note is equipped with a numerical control CM C-) equipment, and this NC equipment follows the program input by the digital signal, Z-axis, axis, R. It has come to control the three-way movement of the ⁇ .
  • CM C- numerical control
  • the set roll (mouth stand 1) to be processed into the material mounting base 5 is formed by 3 rolls 1 0....
  • the center O of the river 1 hole 1 1 is the cutter shaft of the tool post *? 2 1 Align with the center and set Ml.
  • the three mouths of the roll stand 1 set in this way 1 0 ⁇ ⁇ are connected to the oscillating unit 6 and rotated at high speed, and in this state, the first 1st As shown in Fig. (I), make one bite 2 1 ... of the tool post 5 correspond to each port — glue 10 and send the bite from one end side to the other end side of the roll 10 to cut. do.
  • the feed of bit 2 1 (trajectory of cutting edge 2 1 a r ) is linear as shown by the symbol M in Fig. 2 (i) (actually, the locus of operation of bit 2 1 is shown in Fig. 2 (mouth). ), There is movement in the Z-axis direction.
  • This feed is performed by combining axial motion and R-axis motion. That is, the bit 2 1 is circularly moved by axial movement (rotation). At this time, the position of the cutting edge is corrected by the R-axis motion to draw an i-line locus.
  • each bit 2 1 is provided with the cutting edge 2 1 a'directed in the direction parallel to the Z axis. Therefore, in the entire process of such feeding, the cutting edge 2 1 a'always comes into contact with the roll surface from the direction perpendicular to the roll shaft arrangement surface P, and cutting under the same conditions can be performed for the entire roll length.
  • the position to apply the bite is the position directly in front of the roll 10 (the position where the cutting edge 2 1 a'faces the center of the roll) X, but this is limited to a long time. Instead, as long as the rake angle required for cutting can be secured, it is possible to hit the point X'positionally displaced from the front position X in the circumferential direction.
  • any shape can be obtained by adjusting the position of the bit 2 1 in the Z-axis direction, that is, the cutting direction (cutting amount) as shown in Fig. 2 (mouth).
  • machining is performed by moving the bit 2 1 in the three-axis directions of the Z-axis and ⁇ . R ⁇ .
  • the NC device is used in advance.
  • the bit 2 1 By inputting a program according to the target roll surface shape and numerically controlling the three sides of the Z-axis, axis, and R-axis with the NC device, the bit 2 1... can be obtained. It automatically operates along the required trajectory and cuts. This makes it possible to cut the mouth surface into a desired shape with high accuracy. Industrial applicability.
  • the method of the present invention can also cut out a roll having a flat caliper surface, which is a conventional mouth-to-mouth surface processing method. It is an advantage that does not exist.

Abstract

Procédé permettant de découper simultanément un ensemble de rouleaux (10 ...) agencés de sorte que leurs axes (i ...) soient sur un plan et soient écartés selon des angles égaux, de manière à former un trou de calibre (11) à leur centre, un outil tranchant (2) étant pourvu d'outils (21) dont le nombre est égal à celui des rouleaux. L'outil tranchant (2) maintient les outils (21) de sorte que ses parties de bord tranchantes (21a') s'étendent en parallèle avec une tige de l'outil tranchant (2), et les rouleaux sont découpés avec les parties de bord tranchantes (21a') des outils opposés aux côtés avant des rouleaux (10 ...). Pendant la coupe, l'outil tranchant (2) se déplace dans le sens de l'axe Z et dans le sens de la circonférence , et les outils (21) se déplacent dans le sens radial R de la tige de l'outil tranchant. Par conséquent, les parties de bord (21a') des outils sont toujours maintenues perpendiculaires aux axes des rouleaux, indépendamment des variations de leurs positions dans le sens de la circonférence . Cet agencement permet de former simultanément et en continu non seulement les surfaces calibre (10c) mais également les surfaces arquées des parties d'épaulement (10b) sur les deux côtés des surfaces calibre (10c), et des surfaces (10c) à 120°.
PCT/JP1988/000463 1988-05-02 1988-05-02 Procede de coupe de la surface de rouleaux WO1989010814A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP1988/000463 WO1989010814A1 (fr) 1988-05-02 1988-05-02 Procede de coupe de la surface de rouleaux
DE883891295T DE3891295T1 (de) 1988-05-02 1988-05-13 Verfahren zur spanabhebenden bearbeitung der walzenoberflaeche
US07/455,337 US5134910A (en) 1988-05-02 1988-05-13 Method of cutting roll surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1988/000463 WO1989010814A1 (fr) 1988-05-02 1988-05-02 Procede de coupe de la surface de rouleaux

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WO1989010814A1 true WO1989010814A1 (fr) 1989-11-16

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DE (1) DE3891295T1 (fr)
WO (1) WO1989010814A1 (fr)

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SE502598C2 (sv) * 1993-06-09 1995-11-20 Morgaardshammar Ab Förfarande och anordning för slipning av rullar hos rulledare för valsverk samt rulledare som medger ett utförande av förfarandet
US5655424A (en) * 1994-06-29 1997-08-12 Kawasaki Steel Corporation Roller cutting method and apparatus for a plural-roll rolling mill
JP4677062B2 (ja) * 2000-03-10 2011-04-27 シチズンホールディングス株式会社 数値制御旋盤及びこの数値制御旋盤によるワークの加工方法
CN102489723B (zh) * 2011-11-25 2013-11-27 江阴华润制钢有限公司 数控轴回转定位定径机架孔型数控车床
CN107309655A (zh) * 2017-08-22 2017-11-03 江苏精实数控精密机械有限公司 多功能数控三辊定径孔型加工机床及其工作方法
CN113319302A (zh) * 2021-05-10 2021-08-31 东莞市光志光电有限公司 滚压轮的加工方法及滚压轮
CN113319301B (zh) * 2021-05-10 2022-11-22 东莞市光志光电有限公司 压轮的加工方法及压轮
CN113319307B (zh) * 2021-05-10 2022-11-22 东莞市光志光电有限公司 辊轴的加工方法及辊轴

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